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Nevertheless, it's the use of the same calling style that is the root of the problem.

Perl 6 will have a compromise solution to this. The calling style for a private method is very like, but not quite the same as, the calling style for a public method. All private attributes and method names will start with a distinguishing character, which at the moment I would guess is colon, though at one time it was exclamation mark. Anyway,

has $.foo; # public attribute has $:bar; # private attribute method foo (){...} # public method method :bar () {...} # private method ... $ # always calls public method virtually .foo() # unary variant $self.:bar() # always calls private method .:bar() # unary variant ... $ # calls public bar, not private.
In this way, you don't have to change your argument passing--it's just a matter of inserting an extra character. The calls are also self-documenting, since you can tell by inspection whether you're looking for something public or private. Likewise, any use of $.foo is obviously public, while any use of $:foo is obviously private.

In reply to Re: Re^2: Private method variations by TimToady
in thread Private method variations by adrianh

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